Sequential injection analysis for mercury ion with modified screen – printed carbon electrode


  • Eakkasit PUNRAT Department of Chemistry, Faculty of Science, Ramkhamhaeng University, Ramkhamhaeng Road, Bang Kapi, Bangkok 10240, Thailand
  • Naphat PIYASART Department of Chemistry, Faculty of Science and Technology, Suan Sunandha Rajabhat University, U-Thong Nok Road, Bangkok 10300, Thailand
  • Chalinee AUANPHUI Department of Chemistry, Faculty of Science and Technology, Suan Sunandha Rajabhat University, U-Thong Nok Road, Bangkok 10300, Thailand
  • Rutanachai THAIPRATUM Department of Chemistry, Faculty of Science and Technology, Suan Sunandha Rajabhat University, U-Thong Nok Road, Bangkok 10300, Thailand
  • Shoji MOTOMIZU Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Okayama 700-8530, Japan.
  • Wanida WONSAWAT Department of Chemistry, Faculty of Science and Technology, Suan Sunandha Rajabhat University, U-Thong Nok Road, Bangkok 10300, Thailand



green analysis, mercury, sequential injection analysis, modified electrode, gold film


In this study, we developed a simple high-throughput and cost-effective method for monitoring toxic metal ion in an environmental aqueous sample. Mercury ion determination with Sequential Injection Analysis system (SIAs) coupled with the electrochemical detection on the modified screen-printed carbon working electrode (SPCE) is an alternative green analysis of mercury ion. The gold film was used as the modified material for improved mercury ion analysis in the automated system without memory effect on the electrode. Mercury oxidation signal was found at the potential of 0.7 V in 0.1 M HNO3 and 1.0 M HCl with the concentration low to 0.25 ± 0.18 mg×L-1. Online sample preparation and separation will study in the further experiment.


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How to Cite

E. PUNRAT, N. PIYASART, C. AUANPHUI, R. THAIPRATUM, S. MOTOMIZU, and W. WONSAWAT, “Sequential injection analysis for mercury ion with modified screen – printed carbon electrode”, J Met Mater Miner, vol. 32, no. 3, pp. 101–107, Sep. 2022.



Original Research Articles